Why are you trying to "soften" what you clearly chose to not be soft?
Dance with the gal who brought you. Add black and white art, paint the walls whatever you may love. You aren't showing the vanity, or any other element in the space. .....we'll assume equally modern? It's wood, it's painted? It is what style? We have no clue.
Q
Blue and brass looks great but we don't have it anywhere else in the house and I think it will look dated soon.
Q